Improvement in airtight joints for gas-retorts



2 Sheets-6M6 CHARLES F. BIETERWH 81. A. $(IHU3SLER.

improvement in Ain''ight Joints for Gas-Reform 30.121965.Patentedlune18,1872.

E E Z wreak [nven lam.

AM- F/mro-urwaMP/l/c c0. M K/ assay/5's M005: 5)

NITED STATES PATENT QFFIGE.

CHARLES F. DIETERICH AND AUGUST SCH USSLER, OF NEW YORK, N..Y.

IMPROVEMENT IN AIR-TIGHT JOINTS FOR GAS-RETORTS."

Specification forming part of Letters Patent No. 127,965, dated June 18,1872.

To all whom it may concern: I

Be it known that we, CHARLES F. DIET ERIGH and AUGUST Scrn'issLER, ofthe city, county, and State of New York, have invented a new and usefulImprovement in Air-Tight Joints for Gas-Retorts, of which the followingis a specification, reference being had to the accompanying drawingforming part thereof.

The same letters represent similar parts in the several figures.

Figure 1, Plate 1, is a view of the front surface of the neck of agas-retort. Fig. 2, Plate 1, is a view of 'the face of a lid designed tofit upon and close the neck of the retort, Fig. 1. Fig. 3, Plate 2, is across-section of the neck of a gas-retort with its lid, closing it, inposition. Figs. 4 to 9, inclusive, Plate 2, exhibit severalmodifications 0f the method employed to fasten our lead-packing to theneck of the retort or to the lid.

Our invention relates to forming an air-tight joint for gas-retorts byattaching to the lid a fillet of lead, extending around it near theedge, and providing the outer face of the flange surrounding the neck ofthe retort with a corresponding rib or projection that presents a sharpedge, which, by pressure of the lid against the said neck, is forcedinto the lead.

A, Plate 2, represents the neck of a gasretort made in the usual form,the outer end being surrounded by a flange, B, upon which to fasten thelid C designed to close it. Upon the face of this flange is cast orotherwise formed a rib or projection, a, extending entirely around thesaid flange. This projection is triangular in form, as represented inthe drawing, whereby its apex presents an edge more or less sharp. C isthe lid for closing the mouth of the retort. Around its border issecured a fillet of 'lead, I), or some soft alloy of that metalcorresponding to the rib a upon the face of the retort. This fillet oflead is to be secured upon the lid in some convenient manner, so that,while the lid may be put on and taken off without disturbingordisplacing it, it may be readily removed when worn out and replaced by anew one. This end may be efieoted in many ways, some of which are represented upon Plate 2. In Fig. 3 a single groove is made in the lid andthe lead run into it. Fig. 4 shows a mode of fastening the lead castupon the surface of the lid by making holes through the latter, allowingthe lead to run through them and riveting it down upon the oppositeside. Fig. 5 shows the lead run upon studs cast onto the lid. Fig. 6shows the lead run entirely into a dovetailed groove. Fig. 7 shows thelid simply bolted on. Fig. 8 shows a band of lead lying upon the face ofthe lid, and secured to it by running a portion into a dovetailedgroove. If desired, the lead may be attached to the neck of the retortand the angular projection cast or formed upon the lid, as shown in Fig.9, which we regard as an equivalent arrangement. The better arrangement,however, is to secure the lead to the lid and form the projection uponthe flange upon the retort.

The lid and face of the retort being thus constructed and provided, itis evident that when the former is pressed against the latter by beingbolted 0r clamped to it, the edge of the projection a. will be forcedinto the lead, forming thereby an air-tight joint, and that each timethat the lid is removed and replaced the rib will readily embed itselfanew in the lead by not avery severe pressure. When, by repeatedremovals and replacements, the lead becomes worn out, it may be easilyand conveniently taken off and new lead applied.

The application and use of lead forms a convenient, economical, andentirely effectual airtight joint for the purpose specified.

What we claim as our invention, anddesire to secure by Letters Patent,is

The combination, upon the faces of the lid and neck of a gas-retort, ofthe rib a and the lead-packing b, all constructed, combined, andoperating substantially as and for the purpose specified.

CHAS. F. DIETERICH. AUG. SOHUSSLER.

, Witnesses:

WM. 0. REnnY, A. LIVINGSTON MILLS.

